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Enhanced Ferroelectric and Dielectric Properties of CoFe 2 O 4 –Pb(Zr 0.53 Ti 0.47 )O 3 Multiferroic Composite Thick Films
Author(s) -
Chen Wei,
Zhu Weiguang,
Chen Xiaofeng,
Wang Zhihong
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03463.x
Subject(s) - materials science , composite number , ferroelectricity , dielectric , microstructure , composite material , multiferroics , spinel , ferrite (magnet) , sol gel , metallurgy , nanotechnology , optoelectronics
CoFe 2 O 4 –Pb(Zr 0.53 Ti 0.47 )O 3 (CFO–PZT) multiferroic composite thick films sandwiched by PZT composite films were prepared by sol–gel processing and spin‐coating technique. It is shown that although the deeply buried CoFe 2 O 4 spinel ferrite phase could not be detected in X‐ray diffraction patterns, the stable magnetic properties of films confirm its existence in the films. In addition, EDX results also detected CoFe 2 O 4 composite from the cross section of thick films but was not observed on its surface. The structure of CFO–PZT composite thick films could be made denser by introducing enough PZT sol–gel for infiltration after each coated, composite layer and ferroelectric and dielectric properties of composite thick films were, hence, improved remarkably with stable magnetic properties. All the improvements were attributed to the optimized dense microstructure for CFO–PZT composite films.